Qahedjet (also Hor-Qahedjet) could be the Horus name of an ancient Egyptian king (pharaoh), who may have ruled during the 3rd Dynasty or could be a voluntarily archaistic representation of Thutmose III.

[3] Since the only artifact attesting to the ruler and his name is a small stela made of polished limestone of uncertain origin and authenticity,[4] Egyptologists are discussing the chronological position and historical figure of Qahedjet.

Firstly, they stress that the earliest known depiction of an anthropomorphic Horus is found in the pyramid temple of Sahure, second pharaoh of the 5th Dynasty.

[1] Alternatively, the square face of Qahedjet, resembling that of king Djoser may represent an archaistic production from the much later Saite period.

Djoser appears nearly identical in the reliefs of his necropolis at Saqqara, but a small guiding inscription reveals that the naos was built in the 7th-6th century BCE, during the Saitic period.

Thus, the several contradictions in the relief's artistic program make Jaques Vandier and Jean-Pierre Pätznik wonder if the stela is authentic or just a modern fake.

[6][7] Similarly, Jürgen von Beckerath, Rainer Stadelmann and Dietrich Wildung considered Qahedjet to have ruled toward the end of the 3rd Dynasty.